Is this guy the world's most crazed Ravens fan?

YouTube, user Rachel Letourneau

Keith Letourneau appears in a No. 5 Joe Flacco jersey weeping, leaping, pounding his fists on the floor, flinging himself on a couch, grabbing the TV screen with both hands, looking for all the world as if he's about to explode. He's screaming at the top of his lungs, at a pitch that would surely shatter glass if sustained, lamenting that he can't take it anymore, that the play he just saw is unbelievable, that he'll surely die if this continues. And, now, he's Internet-famous. See the series of YouTube videos here.

Keith Letourneau appears in a No. 5 Joe Flacco jersey weeping, leaping, pounding his fists on the floor, flinging himself on a couch, grabbing the TV screen with both hands, looking for all the world as if he's about to explode. He's screaming at the top of his lungs, at a pitch that would surely shatter glass if sustained, lamenting that he can't take it anymore, that the play he just saw is unbelievable, that he'll surely die if this continues. And, now, he's Internet-famous. See the series of YouTube videos here. (YouTube, user Rachel Letourneau)

Chris KaltenbachThe Baltimore Sun

Keith Letourneau gets a little carried away when it comes to his Ravens.

You can see the three videos -- one made when the Ravens tied the score at 28-28, one when they tied the score at 35-35 with just over a minute left in the game, one made as Justin Tucker was kicking the winning field goal in overtime -- here.

But please, be sure to turn the volume down on your computer before you do.

"Something happens when he gets to the playoffs," Rachel Letourneau says from her Bel Air home, by way of explaining her husband's loss of control.

Yeah, his reaction is a bit over-the-top, Keith Letourneau confesses. But it's genuine.

"I'm very passionate when I watch a game," he says, aware that he's woefully understating the case. "It doesn't matter if I'm home or at a bar with friends or even at the stadium. I'm just one of those fans who screams and yells and just wants to have a good time."

Indeed he is. One shudders to think what will happen when the Ravens win the Super Bowl.